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What Do The Numbers On The Bottom Of Old Glass Bottles Mean? [Solved]
In most cases, one- or two-digit numbers are actually mold numbers that indicate the specific bottle mold or section in an automatic bottle machine. If numerous molds were identical, each one received its own number. Base numbers also indicate bottle styles or shapes, manufacturing dates, or factory location codes.4 Aug 2020
What the numbers on the bottom of plastic bottles and containers mean
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Antique Glass Bottles - BASIC DATE CODES EXPLAINED
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